1– The Prophet (SAWA), in answer to a question about games of chance when the verse: “indeed wine, gambling…” was revealed, said, ‘It is anything that can be gambled with, even dice or walnuts.’ He was asked, ‘So what is the dedication to idols (ansab)?’ He said, ‘What they sacrificed for their gods.’ He was then asked, ‘And what is divining with arrows?’ He said, ‘Their arrow shafts that they swear by
[These were all pagan pre-Islamic practices of gambling and games of chance (ed.)].’
[al-Kafi, v. 5, p. 123, no. 2]

4– Imam al-Sadiq (AS), with regard to Allah’s verse in the Qur’an: “Do not eat up your wealth among yourselves wrongfully” said, ‘The people of Quraysh would gamble their families and their money away, and Allah Almighty prohibited them from doing so.’
[al-Kafi, v. 5, p. 122, no. 1]